the tower would damage the value of the famous UNESCO world heritage site

It will. Shame that the rich oilbags bullied the city into allowing this to pass. At least the tower design is beautiful though. All in all, I'll reserve my judgement till we see the finished product, or at least more renders from various angles. Perhaps this one will be an iconic beacon for the city in the same way the Admiralty Spire has historically been - one of the landmarks that the preservationists are worrying about.